diplodocus.org Git - nmh/blob - uip/whom.c

   1
   2 /*
   3  * whom.c -- report to whom a message would be sent
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/signals.h>
  12
  13 #ifndef CYRUS_SASL
  14 # define SASLminc(a) (a)
  15 #else /* CYRUS_SASL */
  16 # define SASLminc(a)  0
  17 #endif /* CYRUS_SASL */
  18
  19 #ifndef TLS_SUPPORT
  20 # define TLSminc(a)  (a)
  21 #else /* TLS_SUPPORT */
  22 # define TLSminc(a)   0
  23 #endif /* TLS_SUPPORT */
  24
  25 #define WHOM_SWITCHES \
  26     X("alias aliasfile", 0, ALIASW) \
  27     X("check", 0, CHKSW) \
  28     X("nocheck", 0, NOCHKSW) \
  29     X("draft", 0, DRAFTSW) \
  30     X("draftfolder +folder", 6, DFOLDSW) \
  31     X("draftmessage msg", 6, DMSGSW) \
  32     X("nodraftfolder", 0, NDFLDSW) \
  33     X("version", 0, VERSIONSW) \
  34     X("help", 0, HELPSW) \
  35     X("client host", -6, CLIESW) \
  36     X("server host", -6, SERVSW) \
  37     X("snoop", -5, SNOOPSW) \
  38     X("sasl", SASLminc(4), SASLSW) \
  39     X("saslmech mechanism", SASLminc(-5), SASLMECHSW) \
  40     X("user username", SASLminc(-4), USERSW) \
  41     X("port server port name/number", 4, PORTSW) \
  42     X("tls", TLSminc(-3), TLSSW) \
  43     X("initialtls", TLSminc(-10), INITTLSSW) \
  44     X("notls", TLSminc(-5), NTLSSW) \
  45     X("mts smtp|sendmail/smtp|sendmail/pipe", 0, MTSSW) \
  46
  47 #define X(sw, minchars, id) id,
  48 DEFINE_SWITCH_ENUM(WHOM);
  49 #undef X
  50
  51 #define X(sw, minchars, id) { sw, minchars, id },
  52 DEFINE_SWITCH_ARRAY(WHOM, switches);
  53 #undef X
  54
  55
  56 int
  57 main (int argc, char **argv)
  58 {
  59     pid_t child_id = OK;
  60     int i, status, isdf = 0;
  61     int distsw = 0, vecp = 0;
  62     char *cp, *dfolder = NULL, *dmsg = NULL;
  63     char *msg = NULL, **ap, **argp, backup[BUFSIZ];
  64     char buf[BUFSIZ], **arguments, *vec[MAXARGS];
  65
  66     if (nmh_init(argv[0], 1)) { return 1; }
  67
  68     arguments = getarguments (invo_name, argc, argv, 1);
  69     argp = arguments;
  70
  71     vec[vecp++] = invo_name;
  72     vec[vecp++] = "-whom";
  73     vec[vecp++] = "-library";
  74     vec[vecp++] = getcpy (m_maildir (""));
  75
  76     /* Don't need to feed fileproc or mhlproc to post because
  77        it doesn't use them when used for whom. */
  78
  79     while ((cp = *argp++)) {
  80         if (*cp == '-') {
  81             switch (smatch (++cp, switches)) {
  82                 case AMBIGSW:
  83                     ambigsw (cp, switches);
  84                     done (1);
  85                 case UNKWNSW:
  86                     adios (NULL, "-%s unknown", cp);
  87
  88                 case HELPSW:
  89                     snprintf (buf, sizeof(buf), "%s [switches] [file]", invo_name);
  90                     print_help (buf, switches, 1);
  91                     done (0);
  92                 case VERSIONSW:
  93                     print_version(invo_name);
  94                     done (0);
  95
  96                 case CHKSW:
  97                 case NOCHKSW:
  98                 case SNOOPSW:
  99                 case SASLSW:
 100                 case TLSSW:
 101                 case INITTLSSW:
 102                 case NTLSSW:
 103                     vec[vecp++] = --cp;
 104                     continue;
 105
 106                 case DRAFTSW:
 107                     msg = draft;
 108                     continue;
 109
 110                 case DFOLDSW:
 111                     if (dfolder)
 112                         adios (NULL, "only one draft folder at a time!");
 113                     if (!(cp = *argp++) || *cp == '-')
 114                         adios (NULL, "missing argument to %s", argp[-2]);
 115                     dfolder = path (*cp == '+' || *cp == '@' ? cp + 1 : cp,
 116                             *cp != '@' ? TFOLDER : TSUBCWF);
 117                     continue;
 118                 case DMSGSW:
 119                     if (dmsg)
 120                         adios (NULL, "only one draft message at a time!");
 121                     if (!(dmsg = *argp++) || *dmsg == '-')
 122                         adios (NULL, "missing argument to %s", argp[-2]);
 123                     continue;
 124                 case NDFLDSW:
 125                     dfolder = NULL;
 126                     isdf = NOTOK;
 127                     continue;
 128
 129                 case ALIASW:
 130                 case CLIESW:
 131                 case SERVSW:
 132                 case USERSW:
 133                 case PORTSW:
 134                 case SASLMECHSW:
 135                 case MTSSW:
 136                     vec[vecp++] = --cp;
 137                     if (!(cp = *argp++) || *cp == '-')
 138                         adios (NULL, "missing argument to %s", argp[-2]);
 139                     vec[vecp++] = cp;
 140                     continue;
 141             }
 142         }
 143         if (msg)
 144             adios (NULL, "only one draft at a time!");
 145         else
 146             vec[vecp++] = msg = cp;
 147     }
 148
 149     /* allow Aliasfile: profile entry */
 150     if ((cp = context_find ("Aliasfile"))) {
 151         char *dp = NULL;
 152
 153         for (ap = brkstring(dp = getcpy(cp), " ", "\n"); ap && *ap; ap++) {
 154             vec[vecp++] = "-alias";
 155             vec[vecp++] = *ap;
 156         }
 157     }
 158
 159     if (msg == NULL) {
 160             cp  = getcpy (m_draft (dfolder, dmsg, 1, &isdf));
 161         msg = vec[vecp++] = cp;
 162     }
 163     if ((cp = getenv ("mhdist"))
 164             && *cp
 165             && (distsw = atoi (cp))
 166             && (cp = getenv ("mhaltmsg"))
 167             && *cp) {
 168         if (distout (msg, cp, backup) == NOTOK)
 169             done (1);
 170         vec[vecp++] = "-dist";
 171         distsw++;
 172     }
 173     vec[vecp] = NULL;
 174
 175     closefds (3);
 176
 177     if (distsw) {
 178         for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
 179             sleep (5);
 180     }
 181
 182     switch (distsw ? child_id : OK) {
 183         case NOTOK:
 184             advise (NULL, "unable to fork, so checking directly...");
 185         case OK:
 186             execvp (postproc, vec);
 187             fprintf (stderr, "unable to exec ");
 188             perror (postproc);
 189             _exit (-1);
 190
 191         default:
 192             SIGNAL (SIGHUP, SIG_IGN);
 193             SIGNAL (SIGINT, SIG_IGN);
 194             SIGNAL (SIGQUIT, SIG_IGN);
 195             SIGNAL (SIGTERM, SIG_IGN);
 196
 197             status = pidwait(child_id, OK);
 198
 199             (void) m_unlink (msg);
 200             if (rename (backup, msg) == NOTOK)
 201                 adios (msg, "unable to rename %s to", backup);
 202             done (status);
 203     }
 204
 205     return 0;  /* dead code to satisfy the compiler */
 206 }